308期：<<01,04,06,08,14,15,16,17,22,31,34,35,36,41,45,48>>开：17有
309期：<<02,06,07,08,09,19,21,22,23,24,25,28,36,39,43,48>>开：44无
310期：<<01,04,09,17,18,21,22,25,27,34,36,42,43,46,48,49>>开：19无
311期：<<02,05,07,10,11,16,17,24,25,26,29,33,34,36,42,47>>开：47有
312期：<<01,02,03,09,14,17,18,19,22,23,24,25,27,38,40,49>>开：88